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Table 3 Correlations Between CASIS and Other PRO Measures--COPD Sample: Baseline Data

From: Development and psychometric assessment of the COPD and Asthma Sleep Impact Scale (CASIS)

PRO Measure

Spearman Correlation

Number of bad days1

0.61

Overall Health Status

0.50

LCOPD

0.58

SGRQ--Symptoms

0.57

SGRQ--Activities

0.53

SGRQ--Impact

0.65

SGRQ--Total Score

0.68

  1. 1 Number of bad days in the past week
  2. All correlations significant at p < 0.0001
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Health and Quality of Life Outcomes

ISSN: 1477-7525

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